For those who they're clipper start to make noise , check the horizontal of the blade when in ON . If the blade touches your hand , need to fix the blades more right or left .
hahaha 100% real friend, but attention there is a solution, sand each comb by hand with a file on the inside, you can clearly see the place where they rub at the extreme zero gap
I got to the point that I was about to use a screw extractor kit before finally using a super small, sharp flat-head screw driver (one for small electronic devices) and it got deep enough to pop them loose. Unbelievably tight right out of the box as well.